Side material and method for its manufacture, and manufacturing method of plated element for heat exchanger

FIELD: power industry.

SUBSTANCE: plated element for heat exchanger includes core material and one or more layers of side material laminated on one of its sides or both of its sides. Multiple small grooves (B) which are periodic and arc-shaped in longitudinal direction of side material are formed on surface of side material (A). Grooves are spread to external peripheral edge of side material and have curvature radius of 800-1500 mm and period (D) of 1-8 mm in the above direction. Roughness of surface of side material (A) comprises 1-15 mcm as per the average at 10 roughness points (Rz). Side material is made by cutting the ingot into material of the specified thickness and alignment in horizontal position with longitudinal direction of the cut material. Centre of rotating disc device corresponds to ingot centre as to width. Occurrence of bad adhesion between material of core and side material is prevented due to controlling the state of surface and flatness of side material.

EFFECT: improving corrosion resistance of plated element and increasing the heat exchanger obtaining process efficiency.

8 cl, 7 dwg, 1 tbl, 14 ex

 

The technical field

[0001] the Present invention relates to a side material side material)used in blokirovannom element to heat the sheet for soldering), intended for use in the heat exchanger motor vehicle or the like, the production method and the production method clad member for heat exchanger.

The level of technology

[0002] Typically, in blokirovannom element for a heat exchanger used in the intermediate cooler, oil cooler, radiator, condenser, evaporator, heater core or the like for motor vehicles, the side material rolled or cut from an ingot and use. For example, in patent document 1 describes the following method for the production of traditional, typical clad member for heat exchanger. First, the aluminum alloy for the core material and aluminum alloys for side materials (which are consumable anode material and the solid solder is melted and cast by continuous casting and subjected to homogenizing heat treatment (or they can also be subjected to the alignment surface), if necessary. Each of the ingots of aluminum alloys for side materials hot-rolled to a predetermined thickness (see S11a and S11b on f is g, where the melting, casting, surface alignment, homogenizing heat treatment and hot rolling designated respectively as the Stage of melting, the Step of molding, the Step of removal of the surface layer, a Step of exposure and the Stage of hot rolling).

[0003] Then, the ingot aluminum alloy for the core material (core material) and hot-rolled sheet metal for side material (material side) laminated and produce clad element to hot rolling (plating hot rolling) in accordance with normal practice (see S12 and S13 figure 7, in which the lamination and hot rolling designated respectively as the Stage of the lamination and the Step of hot rolling). In patent document 2 describes that, as a side of the material to be used in blokirovannom element for a heat exchanger using the side material cut from the ingot and having a given thickness, and perform alignment surface side of the material.

Patent document 1: publication of Japanese unexamined patent application No. 2005-232507 (paragraphs 0037, 0039, 0040).

Patent document 2: Japanese publication of unexamined patent application No. 2007-260769 (paragraphs 0027-0040).

Disclosure of invention

The problem addressed by the invention

[0004] However, the side material used in such traditional prakiraan the m element, the method of its production or the method of manufacturing clad elements have the following problems.

(1) When the side of the material used hot rolled sheet, the number of stages of production clad element is large, and the number of times of hot rolling increases, leading to lower productivity.

[0005] (2) the Ingot for core material is mainly treated with removal of the surface layer, using a milling machine or the like so that its surface was machined. On the other hand, hot rolled sheet for side material has a laminated surface formed by the strips rolling that out in the direction of rolling. Therefore, the condition of the surfaces of the ingot for core material and hot-rolled sheet to the side of the material are different, and there is a problem that, when the ingot for core material and the hot-rolled sheet side of the laminate material and is subjected to plating hot rolling, there is the probability of occurrence of poor adhesion between the core material and the side material. In order to improve the adhesion between the core material and the side material, plating hot rolling becomes necessary multi-pass rolling with a low compression, so that productivity is alnost plating hot rolling is reduced.

[0006] (3) If the side of the material used hot rolled sheet, it follows that control of the surface state and the flatness (especially longitudinal flatness) of the laminated sheet is carried out only with the rolling rolls, and on the surface of hot-rolled sheet during hot rolling is formed thick oxide coating. As a result, the control of the surface state and the flatness is difficult, and the problem arises that poor adhesion between the core material and the side material cannot be prevented.

(4) In the case when the lateral material use are cut from the ingot sheet, even when the surface is controlled by controlling the flatness, thickness of the oxide coating or the like, if the control surface condition (surface configuration) on the basis of the regulation of the form of shallow grooves in the surface, surface roughness, or other cutting or leveling the surface is insufficient, the problem arises that partially poor adhesion still remains.

[0007] (5) When there is poor adhesion between the core material and the side material, a problem arises in that a given degree of plating cannot be obtained, and also, along with the problem of reduced productivity clad element, occur in the t quality problem, when there is deviation as sinks, as well as the problem of deterioration of the corrosion resistance due to poor adhesion.

[0008] the Present invention was implemented in connection with the above-described problems, and its objective is to provide a lateral material, the surface state and the flatness of which is controlled and which enables the production of the clad member for heat exchanger, in which the occurrence of poor adhesion is unlikely and that excellent performance and corrosion resistance in the production of clad member for heat exchanger, method of production and method of manufacturing clad member for heat exchanger using such a side of the material.

Means for solving problems

[0009] to solve the above problems, a side material according to item 1 of the claims is a side material used in blokirovannom element for a heat exchanger comprising a core material and one or more layers of the side material, laminated on one side or both sides, characterized in that the surface of at least one side of the material formed by the set of periodic configurations of small grooves, which are arcs is shaped in one direction side of the material, moreover, these periodic configuration of small grooves extend to the outer peripheral edge side of the material with a radius of curvature of 800-1500 mm and have a period of 1-8 mm in the above-mentioned lateral direction of the material, and the surface roughness of the side material in the above-mentioned direction is 1-15 μm in average ten-point roughness (Rz).

[0010] then, the side material a set of periodic configurations of small grooves, each of which has a predetermined shape, formed in the side surface of the material. Accordingly, when connecting the pressure with the core material in the production of clad member for heat exchanger, the air present between the core material and each of the side materials (when there are many side materials), now released through these periodic configuration of small grooves, and the adhesion is improved. In addition, when adjusting the surface roughness of the side of the material within the specified range, it is unlikely that a gap between the core material and each of the side materials, and the adhesion is improved. As a result, the connectivity of pressure (which in this case means easily performed by the rolling compound pressure) is improved, and the number of passes when connecting pressure (the number of times of grief is her rolling) is reduced.

[0011] the Side material on paragraph 2, of the claims characterized by the fact that the flatness meter in the mentioned direction is 1 mm or less. In this side material, due to the flatness to a preset value or less, the flatness is additionally improved, and the adhesion between the core material and each of the side materials is additionally improved. In addition, connectivity pressure is additionally improved, and the number of passes when connecting the pressure decreases.

[0012] a Side material according to item 3 of the formula of the invention is characterized in that its thickness is 10-250 mm In this side material, by controlling the thickness within the specified range, properly adjusted, the degree of plating clad member for heat exchanger.

[0013] the Method of manufacturing a side material according to item 4 of the claims is a method of manufacturing a side material according to any one of items 1-3 of the claims, includes: a step of melting melting metal for side material having a composition different from the composition of the core material; the step of casting with the casting metal for side material melted at the stage of melting, to obtain the ingot for side material; the step of cutting the drug is an indication of the ingot for side material to cut the material, having a given thickness; and a step of smoothing the surface with the running surface of the alignment surface having a given thickness of cut material that has been chopped, wherein these steps are performed in the order specified above.

[0014] In accordance with such a method of manufacturing a lateral material is produced by performing the cutting and smoothing the surface. Accordingly, the surface state and the flatness of the side of the material can be easily controlled, and the thickness of the oxide coating is reduced, while the surface of the formed periodic configuration of small grooves, each of which has a defined shape, and the surface roughness is adjusted within a specified range. In addition, when connecting the pressure with the core material in the production of the clad member for heat exchanger, the air present between the core material and each of the side materials, now released, and the adhesion is improved. Moreover, connectivity pressure is improved, and the number of passes when connecting the pressure decreases. In addition, in the production of the clad member for heat exchanger side the material is cut as an element for lateral material is used so that there is no need to reduce the thickness of this uh is amenta to the side of the material to hot rolling, what is needed in the case of traditional clad member for heat exchanger. As a result, the number of times of hot rolling (the number of passes when connecting pressure) is reduced in comparison with the traditional number of times of hot rolling, and working stages are saved.

[0015] the Method of manufacturing a side material according to item 5 claims characterized by the fact that during cutting the ingot for side material is cut parallel to the Seating surface of the ingot for side material, which is placed horizontally. In accordance with this production method minimizes the influence of bias (such as, for example, the force tending to fall down cut ingot) cut ingot (cut ingot) due to its own weight or shape, which occurs when cutting, the flatness of the cut side of the material is improved, and the adhesion between the core material and each of the side materials is improved. In addition, improved connectivity with pressure and decreases the number of passes when connecting the pressure.

[0016] the Method of manufacturing a side material according to item 6 claims characterized by the fact that it further includes, after the step of casting and before the step of cutting, the stage homogenizing heat treatment by performing a homogenizing heat treatment of the cast ingot for side material. In accordance with this production method are removed the internal voltage of the ingot for side material, the flatness of the cut side of the material improves, and improves the adhesion between the core material and each of the side materials. In addition, improved connectivity with pressure and decreases the number of passes when connecting the pressure.

[0017] the Method of manufacturing a side material according to item 7 claims characterized by the fact that the surface alignment perform one or more methods selected from the group consisting of a method of cutting, the method of grinding and method of polishing. In accordance with this production method, surface condition and flatness of the side material improves, and improves the adhesion between the core material and each of the side materials. In addition, improved connectivity with pressure and decreases the number of passes when connecting the pressure.

[0018] the Method of manufacturing clad member for heat exchanger according to paragraph 8 of the claims is a method of manufacturing clad member for heat exchanger comprising a core material and one or more layers of the side material, laminated on one side or both sides, and at least one layer side of the material produced is dstanley a side material according to any one of items 1-3 of the claims, the method is characterized by the fact that includes: a stage of preparation with the cooking side of the material and core material, which should be laminated side material; the step of lamination to lamination of the core material and the side of the material to a predetermined configuration to obtain a laminated material; stage homogenizing heat treatment by performing a homogenizing heat treatment of the laminated material; a step of hot rolling by performing hot rolling after stage homogenizing heat treatment; and a step of cold rolling by performing cold rolling after hot rolling.

[0019] In accordance with such a method of production of the side material, the surface state and the flatness of which is controlled, is used as an element for lateral material. As a result, when the side materials laminated on the core material, is unlikely to form a gap between the core material and each of the side materials, and the air present between the core material and each of the side materials effectively released through periodic configuration of small grooves, and the adhesion is improved. In addition, the number of passes when connecting the pressure can be reduced at the stage of hot rolling, and the yield and make inost improve. The result is improved performance and corrosion resistance of the clad member for heat exchanger.

The effects of the invention

[0020] In a side material according to item 1 of the formula of the present invention, the surface state and the flatness of the side material is controlled. Therefore, in the production of the clad member for heat exchanger unlikely to occur poor adhesion, and defects such as sink, can be reduced. In addition, since the connectivity pressure improves, the number of passes when connecting the pressure can be reduced. Due to these effects can be produced clad member for heat exchanger, excellent performance and corrosion resistance.

[0021] In a side material according to item 2 of the claims is unlikely to form a gap between the core material and each of the side materials, and adhesion and connectivity pressure is additionally improved. In a side material according to item 3 of the claims, the thickness of the side material is regulated, and therefore can be produced clad member for heat exchanger having an appropriate degree of plating.

[0022] In accordance with the method of the production side of the material section 4 formulas of the present invention, the surface condition and pleskot the industry side of the material can be easily controlled, and the thickness of the oxide coating is reduced, while the surface side of the material can be adjusted to a specified condition. Therefore, in the production of the clad member for heat exchanger unlikely to occur poor adhesion, and defects such as sink, can be reduced. In addition, since the connectivity pressure is improved, can be reduced the number of passes when connecting pressure. Moreover, since the side material is not produced by hot rolling, the thickness of the element to the side of the material should not be reduced by hot rolling. In addition, in the production of the clad member for heat exchanger number of times of hot rolling is reduced compared with the case when using traditional side material produced by hot rolling, and working the steps can be saved. As a result, can be produced clad member for heat exchanger, excellent performance and corrosion resistance.

[0023] In accordance with the method of manufacturing a side material according to item 5 of the claims, may be obtained lateral material with improved flatness and adhesion and connectivity pressure core material is additionally improved, so that the occurrence of poor adhesion is less likely. In accordance with the way the m production side of the material according to item 6 claims, by performing a homogenizing treatment of the ingot for side material, additionally improves the flatness of the cut side of the material, so that the occurrence of poor adhesion is less likely.

[0024] In accordance with the method of manufacturing a side material according to item 7 claims, by performing alignment surface side of the material by one or more methods selected from the group consisting of a method of cutting, the method of grinding and method of polishing, the surface state and the flatness of the side material is improved, and the occurrence of poor adhesion is less likely.

[0025] In accordance with the method of manufacture of clad material for a heat exchanger according to paragraph 8 of the claims side, the material produced as described above is used as an element for lateral material. Therefore, it is possible to produce excellent in the corrosion resistance of the clad member for heat exchanger, in which the monitored surface and the flatness of the element to the side of the material, and poor adhesion is unlikely to occur. In addition, the clad member for heat exchanger can be manufactured at a low cost of production.

[0026]Brief description of drawings

[1](a)-(f) are views in cross-section, each is which shows the structure of the clad member for heat exchanger in accordance with the present invention.

[Figure 2] is a diagram illustrating the state of the surface side of the material in accordance with the present invention, with (a) and (b) is a schematic diagram illustrating the form of periodic configurations of small grooves, and (c) is a schematic view showing part of the cross section along the line XX in (a) and (b).

[3](a) and (b) is a flowchart of a method of manufacturing clad member for heat exchanger in accordance with the present invention.

[4] is a schematical diagram showing the sketch stage of the casting side of the material or phase of the casting core material.

[5](a) and (b) schematic image showing the sketch of the method of cutting the side of the material.

[6](a) is a schematical diagram showing the structure of the laminated material, and (b) is a schematical diagram showing the sketch stage hot rolling.

[7] a block diagram of a method of manufacturing the traditional clad member for heat exchanger.

[0027]Explanation letter and number designations

S1a Stage production side of the material

S1b Stage production of the core material

S2 Stage lamination

S3 Stage homogenizing heat treatment

S4 Stage hot rolling

S5 Stage cold rolling

1a, 1b, 1c, 1d, 1e and 1f Clad member for heat exchanger

2 Mother of the l core

3 Solid solder

4 Consumable material

5 Intermediate material

17 the Ingot for side material

25 the Ingot for core material

26 the core Material

35 Side material

35a Landing surface

40 Laminated material

A Side material

In a Periodic configuration of small grooves

With a Shallow groove

D Period

F Outer peripheral edge

The best option of carrying out the invention

[0028] Below, with reference to drawings will be described in detail side material, the production method and the production method clad member for heat exchanger in accordance with the present invention.

[0029] the "Side stuff"

The side material is used in blokirovannom element for a heat exchanger comprising a core material and one or more layers of the side material, laminated on one side or both sides. First will be described the structure of the clad member for heat exchanger using that side of the material.

<structure of the clad member for heat exchanger>

The number of layers of the side material of the clad member for heat exchanger in no way limited. For example, can be listed in a two-layer clad item 1a of the heat exchanger, colorology side of the core material 2 coated one solid solder 3, as shown in figure 1(a), a three-layer clad element 1b for a heat exchanger, in which both sides of the core material 2 coated, each solid solder 3 in exact accordance, as shown in figure 1(b), a three-layer clad element 1c for heat exchanger, in which one side of the core material 2 coated with hard solder 3 and the other side of the core material 2 coated consumable material 4 in exact accordance, as shown in figure 1(c), a three-layer clad element for 1d heat exchanger, in which one side of the core material 2 coated intermediate material 5 and hard solder 3, as shown in figure 1(d), a four-clad item 1e for heat exchanger, in which one side of the core material 2 coated intermediate material 5 and the solid solder 3 and the other side of the core material 2 coated consumable material 4, as shown in figure 1(e), five-ply clad element 1f for heat exchanger, in which both sides of the core material 2 coated intermediate material 5 and the solid solder 3, as shown in figure 1(f), etc. However, it should be clear that the side material is also correspondingly applies to blokirovannom element for a heat exchanger, comprising six or more layers, in which the number of layers of the side m of the material (solid solder, consumable material and intermediate material) additionally increased, although it is not shown.

[0030] the Following will describe the state of the surface side of the material. As shown in figure 2(a)-2(c), the side material A (A1, A2) has on its surface a set of periodic configurations In small grooves (fine groove periodic configurations), each of which is arcuate in the longitudinal direction of the side material A. Each periodic configurations In small grooves extends from a radius of curvature R 800-1500 mm to the outer peripheral edge of the F side of the material and has A period D 1-8 mm in the longitudinal direction of the side material A. in Addition, the surface roughness of the side material in its longitudinal direction is 1-15 μm on average by ten points roughness (Rz). It should be noted that, as described below, the surface side of A material is controlled by appropriate adjustment of the rotation speed, the feed speed or the like of the disk of the disk device when the alignment surface.

[0031] it Should be noted that, as shown in figure 2(c), periodic configuration In shallow grooves means the configuration with the period D, including the configuration of the land with a shallow groove in one location. Thus, the plot with the period D corresponds to one period of the periodic is eskay configuration of small grooves. The configuration of the land with the minor groove also includes a configuration in which on a site with a shallow groove formed With many ultrasmall grooves (picture omitted). The configuration of the land with a shallow groove With like trail cutting, trail resurfacing, mark polishing or the like, obtained during the alignment surface. It should be noted that Figure 2(c) is a schematic depiction, enlarged in the vertical direction for convenience.

[0032] it Should be noted that at the stage of initial connection pressure plating, after the air is released from periodic configurations B minor grooves, the side material and the core material are combined with each other, whereas periodic configuration In shallow grooves samorazrushatsya due to hot rolling. So no problem in blokirovannom element due to the periodic configurations B minor grooves does not occur.

[0033] the Longitudinal direction is a direction of rolling, when the side material A is laminated on the core material and the hot-rolled in the production described below clad member for heat exchanger. In addition, the characteristic which becomes curved in the longitudinal direction of the side material a" means that each of the periodic configuration is the second In a shallow grooves becomes curved in the same direction to any one side in the longitudinal direction of the side material A. Thus, when the side material A before lamination to the core material and the hot rolling is independent, the longitudinal direction is not yet defined. From this it follows that, in accordance with the direction of the periodic configurations B minor grooves, the direction of rolling is determined as shown in figure 2.

[0034] When adjusting the radius of curvature R and the period D of the periodic configurations In small grooves to given values of the air present between the core material and each of the side materials effectively released through periodic configuration In shallow grooves when connecting pressure core material in the production of the clad member for heat exchanger. In addition, when adjusting the roughness of the surface to the given value, is unlikely to form a gap between the core material and each of the side materials. As a result, the adhesion is improved and the formation of defects such as sink, can be reduced, while connectivity pressure is improved, and the number of passes when connecting the pressure may be reduced.

[0035] Periodic configuration In shallow grooves shall be provided on at least one of both lateral sides of the subject material cladding material core. Intermittent the e configuration In the shallow grooves are not necessary on non-side cladding (i.e. the outer surface during connection pressure/rolling). However, even if the periodic configuration In shallow grooves provided on this side, there is no particularly adverse effect. Even in the case of material with four-layer material or an intermediate layer, five-layer material, it is necessary to provide periodic configuration In shallow grooves at least on the side subject to the cladding with the core material, whereas periodic configuration In the shallow grooves are not necessary on the side opposite to the core material. But even if the periodic configuration In shallow grooves and provided at the opposite material of the core side, with no particularly adverse effect.

[0036] <a Radius of curvature of the periodic configurations of small grooves: 800-1500mm>

When the curvature radius R of the periodic configurations In the shallow grooves is less than 800 mm, leaving the air at the stage of hot rolling in the production described below clad member for heat exchanger localized, and the effect of improving the adhesion and connectivity pressure becomes insufficient. On the other hand, when the radius R of curvature greater than 1500 mm, the distance over which released the air becomes excessively Bo is Ishim, and the effect of improving the adhesion and connectivity pressure becomes insufficient.

Accordingly, the radius of curvature R of the periodic configurations R fine grooves is from 800 to 1500 mm

It should be noted that preferably the radius of curvature R of the periodic configurations R fine grooves is 900-1300 mm it Should be noted that periodic configuration In shallow grooves extending to the outer peripheral edge side F of A. material That is periodic configuration In the shallow grooves formed continuously to an outer peripheral edge of the F side of the material, without interruption.

When the radius of curvature of the periodic configurations In small grooves becomes too large, and the groove becomes close to linear, if the direction (longitudinal direction) at the time of rolling is set as described above, the groove has a shape elongated in a direction generally perpendicular to the direction of rolling. In this case, the power for venting (pushed under the pressure of the rolls) along the grooves becomes difficult to operate. The upper limit value of the radius of curvature R is provided from this point of view.

Measuring the radius of curvature R is, for example, so that a periodic configuration of small grooves are photographed, and the curvature matching the second arc can be measured on the pictures or on the monitor, suitable for processing the photographed image with the increase.

[0037] <a Period of the periodic configurations of small grooves: 1-8mm>

Here, the period D of the periodic configurations In small grooves, which is 1-8 mm, means that the period D in the longitudinal direction has a generally fixed value even at any location in the period D of the periodic configurations B minor grooves, and its value is in the range from 1 to 8 mm

If the period D of the periodic configurations In the shallow grooves is less than 1 mm, a way of venting cannot be ensured, and the air cannot be sufficiently released. On the other hand, if the period D is greater than 8 mm, the number of periodic configurations In small grooves decreases, the amount of air remaining between the core material and each of the side materials increases, and the formation of shells increases.

Accordingly, the period D of the periodic configurations In the shallow grooves is from 1 to 8 mm, it Should be noted that preferably the period D is from 2 to 7 mm

[0038] the Arcuate shape of the periodic configurations In small grooves may be such that the center of the arc is in the center position in the width side of the material And, as shown in figure 2(a), or the center of the arc is in a position deflected from the center along the width side of the material And on either side, as shown in figure 2(b). The measurement period can be performed, for example, the manufacture of replicas, in which the curved shape of the side surface of material having a periodic configuration of small grooves, transferred to the resin, and the measurement of the surface roughness of the resin in the same manner as in the method of measuring the average ten-point roughness, described below.

[0039] This form periodic configuration In shallow grooves may be controlled as described below by leveling the surface of the cut material. To form a periodic configuration In shallow grooves with such forms, as shown in figure 2(a), when, for example, as a method of smoothing the surface using the method of cutting, way grinding, a method of polishing or the like, as described below, these methods are put into practice in combination with a rotating disk device. While leveling the heat treatment is performed horizontally longitudinal direction of the ingot (shredded material) so that the center of the rotating disk device matches the center of the ingot width. To ensure form, as shown in figure 2(b), when the surface alignment performed as described above, the alignment surface carry out horizontally in the longitudinal direction of the ingot and through PrimeMinister rotating disk device from the center of the ingot width on either side. It should be noted that in this case, in each of both end sections of the side material A periodic configuration In the shallow grooves are interrupted by longitudinal edge depending on the size of the side material A. However, we can say that a periodic configuration In shallow grooves on each of both end sections are also formed arcuate in the longitudinal direction.

[0040] <Average ten-point roughness (Rz): 1-15 μm>

The surface roughness of the side material A in its longitudinal direction is from 1 to 15 μm on the average ten-point roughness (Rz). If the average ten-point roughness (Rz) is less than 1 μm, the path of the venting enough not provided. On the other hand, if the average ten-point roughness (Rz) exceeds 15 μm, it is likely the occurrence of poor adhesion blokirovannom element for a heat exchanger. Accordingly, the surface roughness is set from 1 to 15 μm on the average ten-point roughness (Rz). It should be noted that preferably the surface roughness is from 3 to 14 microns. In controlled here, the average ten-point roughness (Rz) is reflected forms, including minor grooves With. That is mentioned here, the surface roughness, above all, contribute small ka is where it is refuelled C.

[0041] the Measurement of the average ten-point roughness can be performed by measurement with a reference length of 25 mm, using a measuring surface roughness (SURFCORDER SE-30D), manufactured by Kosaka Laboratory Ltd., based on Japanese industrial standard JIS Standard B0601 Surface Roughness". The measurement is also performed, including the length corresponding to at least two periods or more, on the surface side of A material, where the generated periodic configuration In shallow grooves. That is also the dimension including small grooves C. Such regulation surface roughness can be controlled as described below by leveling the surface of the cut material.

[0042] in Addition, the flatness of the side material And a meter in the longitudinal direction is preferably 1 mm or less, and the thickness of the side material And the thickness of the single layer side of the material) is preferably from 10 to 250 mm

<a Flatness of 1 mm or less>

If the flatness exceeds 1 mm, it is likely that the occurrence of poor adhesion blokirovannom element for a heat exchanger.

Accordingly, the flatness is preferably 1 mm or less, or more preferably 0.5 mm or less.

Flatness measurement can be performed, for example, the attachment of the steel line and length 1 m so, to the side the material was admirals 1 m in the longitudinal direction, and the dimension of the resulting gap using a feeler gauge to measure the gap.

[0043] <Height: 10-250 mm>

If the thickness is less than 10 mm, when the side material and the core material are combined pressure, due to the extreme thinness of the side material in the lateral material occurs inhomogeneous deformation, such as corrugation, and the thickness of the plating is likely to fluctuate, increasing the deviation degree of plating. On the other hand, if the thickness exceeds 250 mm, the load from the rolls, the compressive side of the material when connecting pressure, not enough reaches the connected pressure boundary section between the side material and the core material. As a result, the state after connecting the pressure becomes nonuniform, so that the elongation of the plot side of the material after rolling varies in accordance with the heterogeneity of the condition after connection pressure as a factor contributing to fluctuations in the degree of plating.

Therefore, if the thickness is outside the above range, the degree of plating clad member for heat exchanger will probably be unsatisfactory. In addition, in this case also occurs poor adhesion.

Accordingly, the thickness of predpochtitel is but ranges from 10 to 250 mm, or, more preferably, from 20 to 200 mm

[0044] it Should be noted that during the production of the clad member for heat exchanger, when the side material A connect the pressure at the stage of hot rolling, the effect of improving the adhesion and connectivity pressure is achieved without special adjustment of the surface condition of the opposing material (core material or the other side of the material, when necessary intermediate layer)with which you want to connect the pressure side material A.

[0045] If the opposing material (core material or the other side of the material, when necessary intermediate layer)with which you want to connect the pressure side material A, has the same surface as the side of the material a of the present invention, the effect of venting during the connection, the additional pressure increases, which further has the effect of improving adhesion and connectivity pressure and the effect of reducing the formation of shells. Therefore, when opposing material with which you want to connect the pressure side of the material A is a side material for the intermediate layer, it is preferable to provide the same condition of its surface, the side material of the present invention, expressed by the nivenia surface. When pressing against the material with which you want to connect the pressure side material A, represents the core material, it is preferable to provide the same condition of its surface, the side material of the present invention, by performing the alignment surface in the same way as it does for the side material of the present invention.

[0046] it Should be noted that during the production of the clad member for heat exchanger, when the side material A connect the pressure at the stage of hot rolling, performing hot rolling so that the direction of hot rolling during the connection, the pressure corresponds to the rolling direction, as shown in figure 2(a) and 2(b), to the maximum extent the effect of improved adhesion and connectivity pressure.

[0047] the production Method of the side material (Stage production side of the material)"

As shown in Figure 3(a) and 3(b), method for the production side of the material intended for the production of the above-described side of the material with the help of step S1a production side of the material.

Step S1a production side of the material includes the step of melting the stage of molding, the step of cutting and phase alignment surface (marked in figure 3 as a Stage of removal of the surface layer).

It should be noted that, when heart and soul is on, stage homogenizing heat treatment (marked in figure 3 as a Stage extracts) may also be included after the step of casting and before the step of cutting described above.

[0048] (Step of melting)

The stage is a melting step of melting metal for side material having a composition different from the composition of the core material.

When the metal for side material of the clad member for heat exchanger includes a brazing alloy (see 1a-1f figure 1), as this solid solder may be used aluminum alloy type Al-Si series 4000. Here, the alloy type Al-Si also includes alloy containing Zn in addition to Si. As alloy type Al-Si can be used, for example, Al alloy with 7-13 wt.% Si, Al alloy with 7-13 wt.% Si and 2-7 wt.% Zn, or the like. However, the alloy for solid solder is not limited to them. Can be applied to any alloy, when the alloy is used as the brazing alloy.

[0049] When the metal for side material of the clad member for heat exchanger includes a consumable material (see 1c and 1e figure 1), as this is a consumable material can be used aluminum alloy Al-Mn series 3000 or aluminium alloy Al-Zn-Mg series 7000. Also, as a consumable material can be used alloy Al-Zn. Here, the alloy Al-n includes alloy, containing Mn or Si, in addition to Zn. As alloy Al-Zn can be used, for example, Al alloy with 1-7 wt.% Zn, Al alloy with 0.5 to 1.2 wt.% Mn, 0.5 to 1.2 wt.% Si and 2-6 wt.% Zn, or Al alloy with 0.8 to 1.2 wt.% Si and 2-6 wt.% Zn. However, the alloy for a consumable material is not limited to them. Can be applied to any alloy when the alloy is used as a consumable material.

[0050] When the metal for side material of the clad member for heat exchanger includes an intermediate material (see 1d-1f figure 1), as this intermediate material can be used pure aluminum 1000 series aluminum alloy Al-Zn-Mg series 7000 or the like. As this intermediate material can be used alloy Al-Mn. Here, the alloy Al-Mn includes an alloy containing Cu, Si or Ti in addition to Mn. As alloy Al-Mn can be used, for example, Al alloy with 0.5 to 1.2 wt.% Mn, 0.5 to 1.2 wt.% Cu and 0.5 to 1.2 wt.% Si, or Al alloy with 0.5 to 1.2 wt.% Mn, 0.5 to 1.2 wt.% Cu, 0.5 to 1.2 wt.% Si and 0.05 to 0.3 wt.% Ti. However, the alloy for the intermediate material is not limited to them. Can be applied to any alloy when the alloy is used as an intermediate material.

Selection of the component composition of each of the above metals can be determined accordingly depending on the specific application of the clad member for heat e is mennica or the like.

[0051] (Step casting)

The stage castings is a stage of casting metal for side material melted at the stage of melting, with the receipt of the ingot for side material.

As a molding method can be used semi-continuous casting method.

In the semi-continuous casting method using the foundry device 10, as shown in figure 4, the molten metal M (which is metal for side material) is injected into water-cooled metal mold 11 with an open bottom part, and the solidified metal is continuously away from the bottom part of the water-cooled mold 11, resulting receive the ingot for side material 17 having a predetermined thickness T1. When the molten metal M is supplied from the bath 12 in a water-cooled mold 11 through the pipe 13, the float 14 and the glass screen 15. The molten metal M is supplied to the water-cooled mold 11, crystallized by contact with the inner wall of the water-cooled mold 11, the cooled cooling water W, turning into a hardened shell 16. Further, the cooling water W is sprayed directly from the lower part of the water-cooled mold 11 to the surface of the hardened shell 16, resulting in a continuously produce the ingot for side material.

[0052] Here, the thickness T1ingot for side material 17 is preferably from 200 to 700 mm Width and length of the ingot for side material 17 is not specifically limited. However, taking into account performance, it is preferable that the width ranged from 1000 to 2500 mm, and the length from 3000 to 10000 mm

It should be noted that the semi-continuous casting method can be implemented either vertically or horizontally.

[0053] (Phase cutting)

The stage cut is a step of cutting the ingot for side material to cut the material, each of which has a given thickness.

As a way of cutting can be used by way of the longitudinal cutting of slabs.

In the way that the longitudinal cutting of the slabs, as shown in Figure 5(a), the cutting of the ingot for side material 17 made of the above described a semi-continuous casting method, a cutter with a band saw or the like, not shown, produce side materials 35 (cut materials), each of which has a given thickness T2. Here, the thickness T2side material 35 is such that the thickness after flattening the surface is preferably from 10 to 250 mm or, more preferably, from 20 to 200 mm When the thickness T2is outside the above range, the degree of plating clad cell battery (included) is for the heat exchanger, will likely be unsatisfactory. In addition, as shown in Figure 5(b), the ingot for side material 17 preferably is cut parallel to the landing surface 35a of the ingot for side material, which is horizontal.

Here, the landing surface 35a represents the surface of the ingot for side material 17 which is in contact with the frame, where the cutting device.

Thus, the influence of bias (such as, for example, the force of the cut ingot seeking to fall down) cut ingot (cut ingot) due to its own weight or shape, what happens when cut, is minimized, and the flatness of the cut side of the material 35 is additionally improved.

As a way of cutting, incision can also be made circular disk cutter, or cut can also be done by laser, water pressure, or the like.

[0054] (Step of smoothing the surface)

Phase alignment surface is a stage surface alignment surfaces each cut side materials (shredded materials)having a given thickness.

Before lamination to the core material cut side material 35 (layered material)having a given thickness, is subjected to alignment is arnosti to control the surface condition or the flatness of the side material and to remove formed on the product surface crystallization or oxide.

As a way of leveling the surface can be used the method of cutting, such as cutting end mills or cutting with a diamond bit, way grinding, in which the surface is polished with grinding wheel or the like, a method of polishing such as buffing polishing circle, or the like. However, the alignment surface is not limited to them.

[0055] it Should be noted that, when the alignment surface using, for example, the method of cutting, such as cutting end mills or cutting with a diamond bit, way grinding, including grinding grinding wheel or the like, a method of polishing such as buffing polishing circle or the like, performing cutting, grinding, polishing or the like in combination with a rotating disk device, can be obtained surface side material of the present invention. Thus, by controlling the rotation speed of the disk and the feed speed of the disk cut material, it is possible to obtain a surface having the desired periodic configuration In shallow grooves.

[0056] Thus, performing after cutting, leveling the surface of the ingot for side material 17, you can get side material 35 having on its surface a set of periodic configurations In shallow grooves, CA the Daya of which is formed becomes arcuate in the longitudinal direction of the side material, extends to the outer peripheral edge side of the material with a radius of curvature of from 800 to 1500 mm, or preferably from 900 to 1300 mm and has a period of 1 to 8 mm or, preferably, from 2 to 7 mm in the longitudinal direction. Also can be acquired side material 35, the surface roughness of which in the longitudinal direction is from 1 to 15 μm or, preferably, from 3 to 14 microns on the average ten-point roughness (Rz), and whose flatness meter in the longitudinal direction is 1 mm or less, or preferably 0.5 mm or less on the assessment of flatness.

[0057] in Addition, when using such a side of the material received 35 clad member for heat exchanger, in which, after completed the CASS test (test salt spray water: JIS Z 2371) for 1500 hours as tests on the corrosion of external surfaces and carried out the test of immersion (Na+: 113 ppm, Cl-: 58 ppm, SO42-: 60 ppm, Cu2+1 h/mn, and Fe3+: 30 ppm) at 80°C for 2000 hours as tests on the corrosion of the inner surface, the depth of corrosion after these tests was 60 μm or less.

[0058] (Step homogenizing heat treatment)

Stage homogenizing heat treatment is a step further implementation of omogenizarea heat treatment of cast ingot for side material.

As shown in Figure 3(b), in respect of the ingot for side material 17 cast above described molding method, at the stage homogenizing heat treatment before the ingot for side material 17 will be cut, if necessary, can also be appropriately performed homogenizing heat treatment to relieve internal stresses. When performing a homogenizing heat treatment, the internal stress of the ingot for side material 17 is removed, and the flatness of the cut side of the material 35 is additionally improved. In this case, the temperature and the duration of the homogenizing heat treatment is not specifically limited, but preferably the treatment temperature was set to 350 to 600°C., and processing time was set from 1 to 10 hours.

[0059] If the temperature of the processing when a homogenizing heat treatment is less than 350°C, the degree of internal stress is small, the homogenization of the soluble elements, segregated during molding becomes insufficient, and the effect of risky perform heat treatment is small. On the other hand, if the treatment temperature exceeds 600°C, there is a phenomenon called burnout, in which the portion of the surface of the ingot is melted and will probably cause a surface defect in blokirovannom elementele heat exchanger. If processing less than one hour, the effect of internal stress is small, and homogenization, will likely be insufficient. It should be noted that with the productivity of the processing time is preferably ten hours or less.

[0060] the Method of manufacturing clad member for heat exchanger (production Stage clad member for heat exchanger)"

Method of manufacturing clad member for heat exchanger is a method of manufacturing clad member for heat exchanger comprising a core material and one or more layers of the side material, laminated on one side or both sides, and includes the step of preparing includes the step S1a production side of the material and the step S1b production of the core material, the step of laminating step S3 homogenizing heat treatment (designated as Phase extracts figure 3), step S4 hot rolling and the step S5 cold rolling, as shown in Figure 3(a) and 3(b).

[0061] <a preparation Phase>

The preparation stage is a stage of preparation of the side material and the core material, which should be laminated side material.

In the preparation stage by stage S1a production side of the material and step S1b production is odstv of the core material to produce the side material and the core material.

[0062] <a Stage production side material>

Since the step S1a production side of the material described above, its description is omitted here.

It should be noted that in blokirovannom element for a heat exchanger, at least one layer side of the material can be produced with the method described in production (step S1a production side of the material), and the other layer can be produced by traditional methods of production.

[0063] <a Stage production of the core material>

As shown in Figure 3(a), it is assumed that the step S1b production of the core material includes the step of melting and casting.

It should be noted that, if necessary, step S1b production of the core material may also include at least one alignment surface (marked in figure 3 as a Stage of removal of the surface layer) and stage homogenizing heat treatment (marked in figure 3 as a Stage of maturation).

[0064] (Step of melting)

The stage is a melting step of melting metal for core material having a composition different from the composition of the side material.

As a metal for core material can be used aluminum alloy Al-Cu series 2000 aluminum alloy Al-Mn 3000 series aluminum alloy Al-Mg series 5000 or below the data. However, the metal for core material is not limited to this. You can use any alloy when the alloy is used as the core material. Selection of the component composition described above metal can be determined accordingly depending on the specific application of the clad member for heat exchanger.

[0065] (Step casting)

The stage castings is a step of casting a metal for core material, molten at the stage of melting, with the receipt of the ingot for core material.

As a molding method may be used the above-described semi-continuous casting method.

In this case, the thickness T1(see Figure 4) of the ingot for core material 25 is preferably from 200 to 700 mm If the thickness T1is outside the above range, the degree of plating clad member for heat exchanger will probably be unsatisfactory. The width and length of the ingot for core material 25 is not specifically limited. However, given the performance it is preferable that the width ranged from 1000 to 2500 mm, and the length from 3000 to 10000 mm

[0066] If necessary, the ingot for core material 25 cast above described molding method, can also be respectively at least one alignment surface for convenience, the population is formed on the product surface crystallization or oxide before as he is laminated above the side material 35, and a homogenizing heat treatment for stress relief.

[0067] (Step of smoothing the surface)

Phase alignment surface is a step of the surface of the alignment surface of the ingot for core material produced during casting.

Performing a surface alignment on the alignment surface, it is possible to obtain a core material, the surface roughness of which in the longitudinal direction is from 1 to 15 μm or, preferably, from 3 to 14 microns on the average ten-point roughness (Rz), and the flatness of which the meter in the longitudinal direction is 1 mm or less, or preferably 0.8 mm or less on the evaluation of the flatness. If the surface roughness is less than the above range, it is likely to form a trail, and processing are likely to be difficult. If the surface roughness exceeds the above range, it is likely that the occurrence of poor adhesion blokirovannom element for a heat exchanger. If the flatness exceeds the above range, it is likely that the occurrence of poor adhesion blokirovannom element for a heat exchanger.

It should be noted that, as described above, by performing the alignment surface in the same way, the m as this is done for the side material of the present invention, the core material can also provide the same surface as the side material of the present invention.

[0068] (Step homogenizing heat treatment)

Stage homogenizing heat treatment is a step of homogenizing heat treatment of the ingot for core material cast on the stage castings. Performing a homogenizing heat treatment at the stage homogenizing heat treatment, relieve internal stresses of the ingot for core material 25, and the flatness of the core material is additionally improved. In this case, the temperature and the duration of the homogenizing heat treatment is not specifically limited. However, it is preferable that the treatment temperature was set to 350 to 600°C, and the processing time was set from 1 to 10 hours. If the temperature of the processing when a homogenizing heat treatment is less than 350°C, the degree of internal stress is small, the homogenization of the soluble elements, segregated during molding becomes insufficient, and the effect of risky perform heat treatment is small. On the other hand, if the treatment temperature exceeds 600°C, there is a phenomenon called burnout, in which part of the surface the surface of the ingot is melted and likely to cause a surface defect in blokirovannom element for a heat exchanger. If processing time is less than one hour, the effect of internal stress is small, and homogenization, will likely be insufficient. It should be noted that with the productivity of the processing time is preferably ten hours or less.

[0069] <a Step of laminating>

Step S2 lamination is a step of laminating the core material and the side of the material, which is prepared in preparation, in a given configuration, to obtain a laminated material 40.

At step S2 lamination, as shown in Fig.6(a), one side material 35 or many of the side materials (description omitted) laminated in a predetermined configuration on one side or both sides (description omitted) material 26 of the core, is formed having a predetermined length by cutting the front end and the rear end of the ingot for core material 25 (see Figure 4)produced in the previous step to obtain the laminated material 40. In this case, the desired configuration matches the configuration of the core material 2, solid solder 3, consumable material 4 and the intermediate material 5 in blokirovannom element for a heat exchanger as a product of the same such as, for example, clad items 1a-1f, shown in figure 1(a)-1(f). As a method of lamination is used traditionally known method in which, for example, both end segment of material 26 of the core and the side material 35 tied with ribbons. Even when using a method that is running the connection by welding or the like, in addition to the method of tying ribbons, the problem does not occur.

It should be noted that each of the formed lamination gap is not more than 10 mm maximum, and preferably not more than 5 mm.

[0070] <Stage homogenizing heat treatment>

Step S3 homogenizing heat treatment is a step of homogenizing heat treatment of the laminated material produced in step S2 lamination.

In respect of the laminated material 40 made at step S2 lamination, homogenizing heat treatment is performed to uniformization internal structure and softening of the laminated material 40 to facilitate its hot rolling.

[0071] <a Step of hot rolling>

Step S4 hot rolling is a step of hot rolling after step S3 homogenizing heat treatment.

At step S4, hot rolling, as shown in Fig.6(b), the above-mentioned tape with the laminated material is material 40 is cut, and the laminated material 40 hot-rolled, getting hot rolled material 1A. In this case, the method of hot rolling is carried out in practice, traditionally known way of rolling. As used rolling mill in Fig.6(b) shows the 4-roll rolling mill 50. However, it can also be used not shown 2-roll mill or a mill with 4 or more rolls. Figure 6(b) shows the 4-roll rolling mill 50, which includes a number of rolling stands. However, hot rolling may be performed repeatedly, using a rolling mill, including many not shown series of rolling stands, until then, until the hot rolled material 1A with a given thickness.

[0072] (Step cold rolling)

Step S5 cold rolling is a step of cold rolling after step S4 hot rolling.

Hot rolled material 1A produced at the step S4 hot rolling, then subjected to the cold rolling. As an example, processing cold rolling may be performed by compression from 30 to 99%.

[0073] If necessary, to give the desired mechanical properties or the like, it is also possible to perform heat treatment (annealing treatment), treatment for stress relieving, treatment for hardening by aging or the like, the processing is a thief in the hot rolled material 1A pressure to a predetermined shape, or cut hot rolled material 1A to the specified size, in accordance with normal practice. As an example, the annealing processing can be specified running rough annealing performed before cold rolling, intermediate annealing performed between the processes of cold rolling and final annealing performed after the final cold rolling process in continuous furnaces or ovens periodic action at 200-500°C for 0-10 hours. However, the annealing treatment is not limited to this. It should be clear that the conditions for this can be changed accordingly, provided that the effect (mechanical properties), received such treatment.

Clad member for heat exchanger according to the present invention produce individual steps of the above-described method of manufacturing clad member for heat exchanger.

[0074] As described above, using the side of the material, the production method and production method clad member for heat exchanger according to the present invention can be obtained the following effects.

In a side material according to the present invention, the condition of its surface and its controlled flatness, the flatness and smoothness of the side material is improved, and the thickness oxide the first coating further reduced.

In addition, in the production of the clad member for heat exchanger, the air present between the core material and each of the side materials effectively released through periodic configuration of small grooves, the gap is unlikely to be formed between the core material and each of the side materials, and the adhesion is improved. Therefore, it is possible to improve corrosion resistance of the clad member for heat exchanger. In addition, since the connectivity pressure improves, the number of passes when connecting the pressure can be reduced, and the yield and the productivity can be improved.

EXAMPLES

[0075] Thus, the above described the best embodiments of the present invention, and the following will describe examples in which were confirmed by the effects of the present invention.

[0076] Production of test material"

First aluminum alloy for the material of the core, made of an alloy of JIS 3003, melted and cast by continuous casting and subjected to homogenizing heat treatment and removal of the surface layer (the surface alignment) so that received the ingot for core materials (materials of the core elements for materials core)). Also, aluminum alloy for solid Prip is I, made from an alloy of JIS 4045, and aluminum alloy for consumable materials, made of alloy JIS 7072, melted and cast by continuous casting, were subjected to homogenizing heat treatment, each cut to produce the required thickness and subjected to removal of the surface layer (the surface alignment) so that received solid solder (brazing alloys) and consumables (consumables). It should be noted that part of the brazing alloys and part of the consumable materials are not subjected to homogenizing heat treatment. The materials of the core and side materials (brazing alloys and consumables) were performed with a length of 6000 mm and a width of 1000 mm

[0077] in Order to obtain the desired flatness and surface condition with periodic configurations of small grooves, the surface alignment was performed with the combination with the alignment surface and the corresponding adjustment of the rotation speed and the feed speed of the drive device. It should be noted that in the following Comparative example 13 the usual removal of the surface layer, is made the traditional way based on the invention described in the cited document 2, and ad hoc adjustments to ensure the condition of the surface within the scope of this izaberete the Oia is not performed. Then for each manufactured so the side pieces were measured periodic configuration of small grooves (curvature radius and period) on the surface, the surface roughness (average ten-point roughness (Rz)), flatness meter in the longitudinal direction and the thickness of the sheet. The results are shown in Table 1.

[0078] it Should be noted that the radius of curvature was measured by the method using the above photographed image, and the period was measured by the method using the above-described replica resin. The average ten-point roughness (Rz) was measured with a reference length of 25 mm, using a measuring surface roughness (SURFCORDER SE-30D)produced by Kosaka Laboratory Ltd., based on the standard of "JIS Standard B0601 Surface Roughness". It should be noted that the measurement was performed, including the length corresponding to at least two periods or more, the surface area of each of the side materials, which were formed by periodic configuration of small grooves, i.e. also including minor grooves. The flatness was measured using the measuring flatness (Zygo mess, manufactured by Zygo Corporation).

[0079] Then brazing alloys and consumables respectively were eliminirovali on one side of the core materials and their other sides, tied with ribbons subjected homogenize the respective heat treatment, and then connected the pressure by means of hot rolling, getting a three-layer sheet materials. These three-layer sheet materials were not subjected to further cold rolling, and materials after connecting the pressure by means of hot rolling was used as the tested materials. Then each produced in this way test specimens were evaluated for adhesion of solid solder and consumable material.

[0080] <Evaluation of adhesion>

Adhesion was evaluated by visual rays from each surface of the solid solder and the surface side of a consumable material and based on the number of emerging shells (shells). It should be noted that the shell means each of the speakers expanded plots occurred on the surfaces of the brazing alloys and consumables in the state after connection pressure/rolling and having a maximum diameter (length or width) in 50 mm or more. Among the tested materials those without shells, were identified as having superioradhesion, those in which the number of shells ranged from 1 to 3, were identified as having good adhesion (◯), and those in which the number of shells was 4 or more were defined as having poor adhesion (N). The results are shown in Table 1. It should be noted that in Table 1, those to the e does not satisfy the structure of the present invention, and those that do not meet the preferred structure of the present invention, shown with an asterisk next to numeric values.

[0081] As shown in Table 1, since each of Examples 1-14 were satisfied with the structure of the present invention, the adhesion of each of the solid solder and consumable material was excellent or good.

It should be noted that in Example 9 flatness braze exceeded the preferred upper limit value, so that the adhesion of the solid solder was good, but not excellent. In Example 10, the thickness of the solid solder was less than the preferred lower limit value, whereas in Example 11, the thickness of the solid solder exceeded the preferred upper limit value, so that the adhesion of the solid solder was good, but not excellent. It should be noted that in each of these examples, the degree of plating is rather unsatisfactory.

[0082] In Example 14, the flatness of a consumable material exceeded the preferred upper limit value, so that the adhesion of a consumable material was good, but not excellent. In Example 12, the thickness of a consumable material was less than the preferred lower limit value, whereas in Example 13, the thickness of a consumable material exceeded the preferable upper limit value is s, so that the adhesion of a consumable material was good, but not excellent. It should be noted that in each of these examples, the degree of plating is rather unsatisfactory.

On the other hand, each of Comparative examples 1-12 were not satisfied with the structure of the present invention, so that the number of shells was large, and the adhesion was poor. In each of Comparative examples 13 and 14 the brazing alloy and consumable material had no periodic configurations of small grooves, so that the number of shells was great on each side of brazing and sides of a consumable material, and the adhesion was poor. It should be noted that if the adhesion is poor, the defect remains in the thickness of the sheet product, and an aqueous solution containing accelerating corrosion of chlorine ions or the like, depending on the corrosive environment is likely to reach the material of the core, using the defect in the solid solder or consumable material as the path. In the result, the corrosion resistance becomes poor.

[0084] Although the above described side material, the production method and the production method clad member for heat exchanger, each in accordance with the present invention, the essence of the present invention is not limited by the description and should be considered more widely, according to the description in the scope of claims of the forms of the crystals of the invention of this application. It should be understood that the technical scope of the present invention can be widely changed or modified within the scope of the claims without departure from the essence of the present invention.

1. Side material used in blokirovannom element for a heat exchanger containing a core material and one or more layers of the side material, laminated on one side or both sides, with at least one side of the side material formed many small grooves, wherein the fine grooves are made periodically and arcuate in the longitudinal direction of the side material with a radius of curvature of 800-1500 mm and a period of 1-8 mm and extend to the outer peripheral edge side of the material, while the surface roughness of the side material in the above-mentioned direction is 1-15 μm in average ten-point roughness (Rz).

2. Side material according to claim 1, characterized in that the flatness of the side material per meter in the mentioned direction is 1 mm or less.

3. Side material according to claim 1, characterized in that the thickness of the side material is 10-250 mm

4. Method for the production side of the material used in blokirovannom element for a heat exchanger provided is:
stage melting melting metal for side material having a composition different from the composition of the core material;
the stage of the casting with the casting metal for side material melted at the stage of melting, with the receipt of the ingot for side material;
the step of cutting with the cutting of the ingot for side material to cut the material having a given thickness; and
the step of smoothing the surface with the running surface of the alignment surface having a given thickness of cut material that has been cut off, characterized in that
phase alignment surface carry out horizontally longitudinal direction of cut material so that the center of the rotating disk device matches the center of the ingot width, and
these stages are executed in the order specified above.

5. Method of manufacturing a side material according to claim 4, characterized in that the step of cutting the ingot for side material is cut parallel to the Seating surface of the ingot for side material, which is placed horizontally.

6. Method of manufacturing a side material according to claim 4, characterized in that it further comprises, after the step of casting and before the step of cutting the stage homogenizing heat treatment by performing a homogenizing heat treatment of the cast ingot for Boko is on the material.

7. Method of manufacturing a side material according to claim 4, characterized in that the surface alignment perform one or more methods selected from the group consisting of a method of cutting, the method of grinding and method of polishing.

8. Method of manufacturing clad member for heat exchanger comprising a core material and one or more layers of the side material, laminated on one side or both sides, characterized in that it contains:
the stage of preparation with the cooking side of the material and core material, which should be laminated side material;
stage lamination to lamination of the core material and the side of the material to a predetermined configuration to obtain a laminated material;
stage homogenizing heat treatment by performing a homogenizing heat treatment of the laminated material;
stage hot rolling by performing hot rolling after stage homogenizing heat treatment and
stage cold rolling with performing cold rolling after hot rolling,
moreover, at least one layer of the side material is a side material according to any one of claims 1 to 3.



 

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